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-»
Physics
-»
Other Physics
Light, imaging
94 Questions - Developed by:
V
- Developed on:
2016-12-08
- 1,746 taken
1
- emissions of photons are caused by excitations of interacting atoms
True
False
2
- emissions of photons are caused by de-excitations of atoms
True
False
3
- atoms can be excited by absorption of any (whatever) photon
True
False
4
- atoms can be excited by absorption of photons with the energy = E2 -E1; (E1: the energy of basic state, E2: the energy of excited state of the atom)
True
False
5
- atoms can be excited by absorption of photons with the energy E2-E1; (E1, E2: the energies of different excited states of the atom)
True
False
6
- atoms can be excited by absorption of photons with the frequency ν = (E2-E1) / h ; (E1: the energy of excited state, E2: the energy of basic state of the atom)
True
False
7
- infrared light has lower intensity than the visible light
True
False
8
- infrared light has higher intensity than the visible light
True
False
9
- visible light has lower intensity than the ultraviolet light
True
False
10
- visible light has higher intensity than the ultraviolet light
True
False
11
- infrared light has lower wavelength than the visible light
True
False
12
- infrared light has higher wavelength than the visible light
True
False
13
- infrared light has higher wavelength than the ultraviolet light
True
False
14
- photons of visible light carry lower energy than the photons of ultraviolet light
True
False
15
- photons of visible light carry lower energy than the photons of infrared light
True
False
16
- spectrum of monochromatic light is one spectral line
True
False
17
- spectrum of polychromatic light is one spectral line
True
False
18
- spectrum of polychromatic light can be continuous
True
False
19
- spectrum of polychromatic light can contain several spectral lines
True
False
20
- dependence of the number of absorbed photons on energy of these photons represents
the absorption spectrum
True
False
21
- population metastability within the active laser medium is required for laser beam
generation
True
False
22
- pressure inversion within the active laser medium is required for laser beam generation
True
False
23
- population inversion within the active laser medium is required for laser beam
generation
True
False
24
- metastability of basic state of molecules or atoms of active laser medium is required
for laser beam generation
True
False
25
- light dispersion causes the opening aberration of lens
True
False
26
- irregular curvature of the cornea causes spherical aberration (e.g. nearsightedness)
True
False
27
- irregular curvature of the cornea causes aspherical aberration
True
False
28
- outer light has to penetrate several optical media with different refractive indexes before reaching the eye retina
True
False
29
- light penetrates several eye structures to reach the retina; the lowest refraction is
observed between the air and the cornea
True
False
30
- light penetrates several eye structures to reach the retina; the lens contributes mainly to the total eye power
True
False
31
- index of refraction depends on the wavelength of light
True
False
32
- index of refraction depends on the speed of light
True
False
33
- index of refraction depends on the medium through which the light travels
True
False
34
- index of refraction is expressed in m/s2
True
False
35
- index of refraction is expressed in m/s
True
False
36
- index of refraction is expressed in m . s
True
False
37
- index of refraction depends on the angle of incidence of light
True
False
38
- critical angle is maximum possible angle when the light beams penetrate from the air
into the prism
True
False
39
- critical angle is minimum possible angle when the light beams penetrate from the air
into the prism
True
False
40
- critical angle is minimum possible angle when the light beams penetrate from the prism into the air
True
False
41
- critical angle is maximum possible angle when the light beams penetrate from the
prism into the air
True
False
42
- magnification of the lens can be expressed as a ratio between the image and object
heights
True
False
43
- magnification of the lens can be expressed as a ratio between the image and object
widths
True
False
44
- magnification of the lens can be expressed as a ratio between the distances to the object and to the image
True
False
45
- magnification of the lens is expressed in dioptres
True
False
46
- magnification of the lens is expressed in (dioptres-1)
True
False
47
- magnification of the lens can be expressed in per cent
True
False
48
- magnification of the converging lens can be expressed as a ratio between the distances
from the lens center to the image and from the lens center to the object
True
False
49
- the unit of optical power of eye is lux
True
False
50
- the unit of optical power of eye is dioptre
True
False
51
- the focal length of converging lens with the optical power of 5D is 20 cm
True
False
52
- the focal length of converging lens with the optical power of 5D is 2 cm
True
False
53
- the shorter the focal length of converging lens, the lower its refractivity
True
False
54
- the shorter the focal length of converging lens, the higher its refractivity
True
False
55
- the lower the radius of converging lens curvature, the lower the lens refractivity
True
False
56
- the higher the radius of converging lens curvature, the higher the lens refractivity
True
False
57
- fictive (non-real) image is produced on eye retina
True
False
58
- real image is produced on eye retina
True
False
59
- image on eye retina is inverted (inverse)
True
False
60
- image on eye retina is not straight (direct)
True
False
61
- image on eye retina is reduced (smaller than the object)
True
False
62
- image on eye retina is magnified (enlarged)
True
False
63
- resolution of light microscopes is proportional to the wavelength of used light and inversely proportional to the refractive index of environment between the slide (preparation) and the objective
True
False
64
- resolution of light microscopes is proportional to the wavelength of used light
True
False
65
- resolution of light microscopes depends on the refractive index of environment between the slide (preparation) and the objective
True
False
66
- magnification of microscope is a sum of magnifications relevant to individual optical parts of microscope, usually and mostly the sum of objective and eyepiece magnifications
True
False
67
- magnification of microscope is a ratio of magnifications relevant to individual optical parts of microscope, usually and mostly the ratio of objective and eyepiece magnifications
True
False
68
- magnification of microscope is a product of magnifications relevant to individual optical parts of microscope, usually and mostly the product of objective and eyepiece magnifications
True
False
69
- optimum magnification of microscope is usually attained by higher magnification of eyepiece and lower magnification of objective
True
False
70
- optimum magnification of microscope is usually attained by higher magnification of objective and lower magnification of eyepiece
True
False
71
- optimum magnification of microscope is usually attained by equal magnification of eyepiece and objective
True
False
72
- magnification of microscopes behind the optimum is called „empty magnification“, since this magnification does not allow to detect more details of an object
True
False
73
- magnification of microscopes below the optimum is called „empty magnification“, since this magnification does not allow to detect more details of an object
True
False
74
- each lens with optical power more than 4 D can be used as a magnifying glass
True
False
75
- each lens with optical power less than 4 D can be used as a magnifying glass
True
False
76
- converging lenses with high optical powers work as magnifying glasses if the object is placed in the focal distance or even closer to the lens
True
False
77
- converging lenses with high optical powers do not work as magnifying glasses if the object is placed further than the focal distance of the lens
True
False
78
- we observe real images of observed objects using both the magnifying glasses and microscopes
True
False
79
- we observe real images of observed objects using magnifying glasses, but fictive images in microscopes
True
False
80
- we observe real images of observed objects using microscopes, but fictive images in magnifying glasses
True
False
81
- a numerical aperture depends on an amount of light beams (the angle size), which gets in the objective from the observed spot (numerical aperture influences a resolution of the microscope)
True
False
82
- refractometric measurements of substance concentration employ the changes of the critical angle magnitude with changes of solution concentration
True
False
83
- spectrophotometric measurements of substance concentration employ the changes of the critical angle magnitude with changes of solution concentration
True
False
84
- we adjust and observe colour boundary at the position of critical angle during the measurement with refractometer
True
False
85
- converging lenses always produce real images of objects (regardless the position of objects to the lens)
True
False
86
- converging lenses can produce fictive images of objects
True
False
87
- fictive images are characterized by the fact that the light (photons) does not produce any image on the eye retina
True
False
88
- microscopes produce real images of observed objects because the function of eyepiece (ocular)
True
False
89
- microscopes produce real images of observed objects because the function of objective
True
False
90
- magnification of magnifying glass depends mostly on object position and very little on the lens optical power
True
False
91
- magnification of magnifying glass depends mainly on the lens optical power
True
False
92
- during the measurement of the size of objects using the microscope one must calibrate the ocular scale
True
False
93
- during the measurement of the distance to objects using the microscope, one must calibrate the ocular scale
True
False
94
True
True
False
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